Actually the main story of this chapter isn't form Junji Ito himself. It's from a short story by Edogawa Ranpo, a Japanese litterateur. (and fyi the credit is already written in the cover of the chapter). Edogawa Ranpo, just like Junji Ito, used to write thriller or horror stories. So it's just make sense if Junji Ito made a manga based on his stories.
Actually the main story of this chapter isn't form Junji Ito himself. It's from a short story by Edogawa Ranpo, a Japanese litterateur. (and fyi the credit is already written in the cover of the chapter). Edogawa Ranpo, just like Junji Ito, used to write thriller or horror stories. So it's just make sense if Junji Ito made a manga based on his stories.